Spectrophotometric Studies on the Reaction of Diaveridine with Some Sulfonphthalein Dyes Based on Ion-Pair/Ion-Associate Complexes Formation
Table 1
Spectral characteristics of the calibration graphs and analytical data in the determination of the studied dug using the ion-associate complex formation method.
Ion-pair
λmax
Beer’s low up to μg mL−1
Ringbom range (μg mL−1)
DLa (μg mL−1)
QLb (μg mL−1)
εc
SSd (μg cm−2)
Quantitative parametere
Error (%)
RSD (%)
95% confidence
a
b
R
D-I
420
16.89
2.95–11.9
0.75
2.50
2.70 × 10−4
0.0096
0.014
0.018
0.9967
0.19
0.21
0.2948
D-II
440
18.21
2.43–13.34
0.80
2.67
2.84 × 10−4
0.0145
0.069
0.043
0.9979
0.38
0.23
0.2124
D-III
430
16.91
3.90–15.6
0.72
2.38
2.89 × 10−4
0.0139
0.072
0.034
0.9995
0.10
0.15
0.2227
D-IV
415
18.20
2.95–13.34
0.62
2.07
2.23 × 10−4
0.0119
0.084
0.030
0.9972
0.48
0.15
0.2645
D-V
445
18.17
2.95–12.95
0.85
2.48
2.16 × 10−4
0.0120
0.083
0.063
0.9991
0.29
0.18
0.2544
D-VI
430
18.01
3.25–15.6
1.91
6.35
1.74 × 10−4
0.0149
0.066
0.013
0.9996
0.57
0.26
0.1544
D-VII
430
16.81
2.61–14.32
2.29
7.63
2.22 × 10−4
0.0118
0.085
0.015
0.9991
0.66
0.28
0.2618
D-VIII
440
17.98
3.87–15.57
2.60
8.83
1.20 × 10−4
0.0051
0.046
0.004
0.9997
0.76
0.32
0.2227
aDetection limit. bQuantification limit. cMolar absorptivity (L mol−1 cm−1). dSandell sensitivity.eRegression equation A = a + bC, where C is the concentration in μg·mL−1.
